Validation of the Quantitative Checklist for Autism in Toddlers in an Italian Clinical Sample of Young Children With Autism and Other Developmental Disorders (original) (raw)
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Background: There is growing research evidence that subclinical autistic traits are elevated in relatives of individuals with autism spectrum disorder (ASD), continuously distributed in the general population and likely to share common etiology with ASD. A number of measures have been developed to assess autistic traits quantitatively in unselected samples. So far, the Quantitative-Checklist for Autism in Toddlers (Q-CHAT) is one of very few measures developed for use with toddlers as young as 18 months, but little is known about its measurement properties and factor structure. Methods: The present study examined internal consistency, factor structure, test-retest stability, and convergent validity of the Q-CHAT in a sample of toddlers in Singapore whose caregivers completed the Q-CHAT at 18 (n = 368) and 24 months (n = 396). Results: Three factors were derived accounting for 38.1 % of the variance: social/communication traits, non-social/ behavioral traits, and a speech/language factor. Internal consistency was suboptimal for the total and speech/language scores, but acceptable for the social/communication and non-social/behavioral factor scores. Scores were generally stable between 18 and 24 months. Convergent validity was found with the Pervasive Developmental Disorders subscale of the Child Behavior Checklist (CBCL) completed by caregivers when their children were 24 months. Q-CHAT total scores in this sample were higher than those reported in other unselected samples from the UK.
2008
We report a major revision of the CHecklist for Autism in Toddlers (CHAT). This quantitative CHAT (Q-CHAT) contains 25 items, scored on a 5 point scale (0-4). The Q-CHAT was completed by parents of n = 779 unselected toddlers (mean age 21 months) and n = 160 toddlers and preschoolers (mean age 44 months) with an Autism Spectrum Condition (ASC). The ASC group (mean (SD) = 51.8 (14.3)) scored higher on the Q-CHAT than controls (26.7 (7.8)). Boys in the control group (27.5 (7.8)) scored higher than girls (25.8 (7.7)). The intraclass correlation for test-retest reliability was 0.82 (n = 330). The distribution in the control group was close to normal. Full examination of the clinical validity of the Q-CHAT and test properties is underway.
Brain Sciences
Pediatric surveillance through screening procedures is needed to detect warning signs of risk for Autism Spectrum Disorder under 24 months of age and to promote early diagnosis and treatment. The main purpose of this study is to extend the literature regarding the psychometric properties of two screening tools, the First Year Inventory (FYI) and the Quantitative-CHecklist for Autism in Toddler (Q-CHAT), testing their criterion validity. They were administered during a three-wave approach involving the general population. At T1, 657 children were tested with the FYI and 36 of them were found to be at risk. At T2, 545 were tested with the Q-CHAT and 29 of them were found to be at risk. At T3, 12 out of the 36 children with a high score on the FYI and 11 out of the 29 children with a high score on the Q-CHAT were compared to 15 typically developing children. The criterion validity was tested considering the severity of the autistic symptoms, emotional/behavioral problems, and limited g...
2019
Background: Considering people with autism, early screening is necessary for early intervention. Parents report that questionnaires are effective tools for screening autism. The short version of the Checklist for Autism in Toddlers (Q-CHAT-10) is a new scale for screening autism in toddlers. Objectives: The aim of this study was to evaluate the psychometric properties of the Persian version of Q-CHAT-10. Materials and Methods: We analyzed the data of the full version of Q-CHAT. We only selected data regarding 10 items, which consisted of the short version of Q-CHAT. Results: The typically developing group included 50 children with the mean age of 29.62 months, and the autism spectrum disorder group included 50 children with the mean age of 27.14 months. The mean total score was 2.1 and 6.46 for the typically developing group and the autism spectrum disorder group, respectively, which was significantly different (t[98]=-11.52, P=0.000). The Cronbach's alpha coefficient of the checklist was 0.78, and the test-retest reliability was 0.951 (P<0.001). The estimated area under curve was 0.935. Conclusion: The Persian version of Q-CHAT-10 has good reliability and predictive validity and it can be used for screening autism.
Iranian journal of psychiatry, 2015
Early screening of autism increases the chance of receiving timely intervention. Using the Parent Report Questionnaires is effective in screening autism. The Q-CHAT is a new instrument that has shown several advantages than other screening tools. Because there is no adequate tool for the early screening of autistic traits in Iranian children, we aimed to investigate the adequacy of the Persian translation of Q-CHAT. At first, we prepared the Persian translation of the Quantitative Checklist for Autism in Toddlers (Q-CHAT). After that, an appropriate sample was selected and the check list was administered. Our sample included 100 children in two groups (typically developing and autistic children) who had been selected conveniently. Pearson's r was used to determine test-retest reliability, and Cronbach's alpha coefficient was used to explore the internal consistency of Q-CHAT. We used the receiver operating characteristics curve (ROC) to investigate whether Q-CHAT can adequat...
Brain Sciences, 2020
Standardized screening programs ensure that children are monitored for early signs of autism spectrum disorder (ASD) in order to promote earlier diagnosis and intervention. The aim of this study is to identify early signs of atypical development consistent with ASD or other developmental disorders in a population of 224 low-risk toddlers through a two-stage screening approach applied at 12 and 18 months of age. We adopted two screening tools combined: 1. the Communication and Symbolic Behavior Scales Developmental Profile (CSBS DP) Infant–Toddler Checklist (I-TC) and 2. The Quantitative Checklist for Autism in Toddlers (Q-CHAT). We assessed their sensitivity and specificity related to the diagnostic outcome at 36 months. The results showed that autistic signs can be detected as early as the first year even through a few questions extrapolated from both screeners and that our model could be used as a screening procedure in the Italian public health system.
OALib, 2015
Objective: To examine the concurrent and criterion validity of The Modified Checklist for Autism in Toddlers (M-CHAT) in Eastern Province, Saudi Arabia. Methods: Two groups, comprising 35 Autistic children previously diagnosed with autism, 113 children without Autistic Disorders. They were selected from different clinical settings: Primary care Clinic, Shumua Al Amal Private Day Care Central for Mental Disable-Dammam and the child psychiatric Clinic of AL Amal Complex for Mental Health-Dammam. To determine the Concurrent validation, ANOVA and discriminate analysis were used to compare the significant different between samples, Control group (normal) and the experimental group (autistic). The Correlation Matrix was used to establish the internal consistence of the (M-CHAT) items and to examine the criterion validity. Results: The mean total score was significantly higher in the group of autistic children than in the other group. In the items of swing, interesting, climbing, playing peek-doo, pretending, Asking, using fingers, Playing with toys, Bringing objects, Over sensitive auditory, Reactive response, Response, Imitation, Pointing, looking, Attention, Deaf, Understanding, Staring & wandering, and Reaction checking. The Reliability Coefficients of items by Alpha = 0.8123 indicates high sensitivity and specificity of M-CHAT, while the content Validity (internal consistence) shows 162 correlation coefficient between the items indicating high validity of M-CHAT. Conclusions: The Modified Checklist for Autism in Toddlers (M-CHAT) shows promise as an instrument for identifying children with autistic disorders, in primary care clinic for early detection.
The CBCL 1.5-5 and the identification of preschoolers with autism in Italy
Epidemiology and psychiatric sciences, 2011
To study the potential use of child behaviour checklist (CBCL) 1.5-5 scales for the early identification of preschoolers at risk of autism. CBCL scores of three groups of preschoolers were compared: (1) an experimental group of 101 preschoolers with autism spectrum disorder (ASD); (2) a control group of 95 preschoolers with other psychiatric disorders (OPD); (3) a control group of 117 preschoolers with typical development (TD). One-way analysis of variance (ANOVA), logistic regression with odds ratio (OR) and receiver operating characteristic (ROC) analyses were performed. ANOVA revealed that ASD and OPD had significantly higher scores in almost all CBCL scales than TD. ASD presented significantly higher scores than OPD on Withdrawn, Attention Problems and Pervasive Developmental Problems (PDP) scales. Logistic regression analysis demonstrated that these same CBCL scales have validity in predicting the presence of an ASD towards both TD and OPD. ROC analysis indicated high sensitivi...